PoieticsPTMP Leukopaks are bags of fresh human blood cells collected from normal peripheral blood by automated apheresis in ACD-A anticoagulant and density gradient centrifugation. Each Leukopak contains a mixture of monocytes, lymphocytes, platelets, plasma and red cells. Leukopaks are useful in research for the isolation of specific cell types, the application of novel isolation methods, the comparison of different blood cell types from a single donor and other applications associated with immune and blood cell research. Each Leukopak contains large quantities of cells from a single donor and is monocyte-enriched with a guaranteed minimum volume of 100 ml and a standard cell count of approximately 60 million/ml. All donors are screened for general health and test negative for HIV-1 and hepatitis B and C. Leukopaks with custom volumes or special donor characteristics can also be provided including: tetanus-boosted, cytomegalovirus-negative, diabetic, and Epstein-Barr virus donors. Mobilized peripheral blood and polymorphonuclear cells-enriched Leukopaks are available upon request. Cambrex Bio Science Walkersville, Inc.800-638-8174www.cambrex.com